Aku Ankka

Aku Ankka

Lives in Cocos (Keeling) Islands Cocos (Keeling) Islands
Works as a Hunter-gatherer
Joined on Dec 28, 2010

Aku Ankka's recent activity

  • What do you mean by "recovering highlights"? From where do you recover it? How can the part I underlined above make any sense?
  • The'll keep on producing good bang/buck lenses, also some very good lenses compared to CaNikons. Camera bussiness will remain as a kind of hobby until the remaining feasibility of the x3 ...
  • Or it just could be that supporting a camera with five or so users is not a high priority especially considering the difference in the dataprocessing needed. Adobe is in the bussiness for money ...
  • This has very little to no influence on the microcontrast unless the demosaicing algorithm used is very simple as far as I can see. I'm not sure if prediction is a good word to use. But not only ...
  • Microcontrast is a propery of optics (and software processing): (1) The lens (2) Other optical material in front of the sensor (3) Sharpening filter ...
  • (I added the emphasis above.) Kendall, which offers more information: g = 15 or g1 = 3 g2 = 4 g3 = 2 g4 = 6 According to mathematics, you can calculate g = g1 + g2 + g3 + g4. You can not get g1, ...
  • Replied in The best way
    Always shoot RAW in the native resolution (is it 19MP now?), then do noise reduction in a 3rd part software, like neat image. And then reducde the size to what ever you want the output size to be. ...
  • I would say that subjects which can be photographed by others with all kinds of gear for comparison purpouses is a good thing to do - evaluation needs reference points. One good idea wood be to ...
  • The ISO is just metadata on Sigma cameras. Thus if you can expose 1 to 1.5 stops more than what the camera suggests at ISO 100, you can do 2 to 2.5 at ISO 200 and 3 to 3.5 and ISO400 and so on. ...
  • Yes, clearly. I imagine the different spectas of light on the lit parts of the head and the shade parts confuse the SPP color guesswork. Maybe making two images, one for lit parts, one for shadows ...
  • What is this? What is this strange effect?
  • In a hurry now, so not really reading about your methodology. Are you measuring "per pixel"? By this I mean SD1 vs. 15Mp crop of A7r? If so, I don't see what is the point as the results don't tell ...
  • Replied in Test Images
    Time to buy a bigger camper then? :-D Thank you for the images. The b&w is now good. Most lenses should be easilly good enough for the pixel pitch of the SD9, this one easily. Thank you again!
  • Replied in Sharpening
    Looking at the charts you provided it looks like -20 is really "no sharpening at all", and that Iridient applies some sharpening even when it's turned off. Could you do a small service and take the ...
  • Replied in Test Images
    Thank you for the images - I do wish you could take another shot at the b&w version - a bit further away from the target so that there would be clearly unresolved areas outside of the bullseye.
  • Replied in Framing?
    Framing is not important - the test is scale invariant. Better to be small than large part of the image as it is important that the center part is not resolved.
  • Replied in Sharpening
    The slanted enge is of no interest, but the star itself, thus sharpening setting is not as important (especially since the measurement(s) are done by hand). Quack!
  • Replied in Sharpening
    Sharpening slider to the minumum is ideal, however this is not an absolutely critical thing - unless the sharpening creates halos or other artifacts, it's all right. But no sharpening means no ...
  • Replied in Clarifying
    SPP = Sigma Pro Photo (or is it Photo Pro?), the raw-developing program for the files. Actually other raw-converters are fine too, but no sharpening should be used. I only meant that out-of-camera ...
  • Hi all, I'm asking for a small service which should take no more than a few minutes from those willing to help. I am interested in seeing the results of various Sigma cameras regarding two test ...
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